A kind of coating for tinplate and its production process and application

Abstract

The invention relates to the technical field of paint for painting tinplates, and specifically relates to a paint for tinplate, a production technology and applications thereof. The paint for tinplate comprises the following components in percentage by weight: 5 to 10% of hydroxyl containing acrylic acid, 70 to 80% of melamine-formaldehyde resin, 2 to 8% of ester solvent, and 5 to 10% of ketone solvent. Compared with the prior art, the paint has a performance on resisting solvent and high temperature; and when the paint is painted on a tinplate, the formed coating can resisting the corrosion of adhesive glue and high temperature during the adhering process. The provided paint has a strong adhesive property, can be applied to various products, can be directly painted on a material as a compound coating, is also capable of being co-used with an aqueous release layer as a transfer coating, and meets the requirements of printing on tinplate.

Description

technical field [0001] The invention relates to the technical field of coatings for tinplate printing, in particular to a coating for tinplate and its production process and application. Background technique [0002] With the development of society, people's pursuit of life is getting higher and higher, especially the pursuit of commodities is not limited to quality, and they also have higher requirements for the appearance of commodity packaging. Therefore, product manufacturers use a wide variety of packaging materials to decorate commodities in order to improve the competitiveness of commodities. Among them, tinplate is used as the substrate of the packaging material, and then a coating is pasted on the substrate to print patterns. It looks high-end and atmospheric, and has been welcomed by major packaging industries. However, due to the high hardness of the material of tinplate, the baking temperature of the glue and varnish used for laminating the coating is relatively...

AI Technical Summary

Problems solved by technology

However, due to the high hardness of the material of tinplate, the baking temperature of the glue and varnish used for laminating the coating is relatively high, and the glue and ink used in printing are highly corrosive, which often cause damage to the coating used for tinplate. Erosion leads to a decline in the quality of tinplate printing patterns, so the coating used for tinplate must have a certain performance of high temperature resistance and solvent resistance

Most of the coatings on the market use acrylic acid as a coating for tinplate. The solvent resistance and high temperature resistance of acrylic acid are not high, which cannot meet the needs of printing on tinplate materials.

In addition, the existing tinplate coatings on the market are transfer coatings that can only be used as transfer coatings, and composite coatings that can only be used as composite coatings and cannot be used universally, which limits the scope of use of tinplate coatings.

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